WATCH: Montreal's traffic officers raking in lots of overtime pay

Montreal's traffic officers have been pulling lots of overtime over the last 18 months — $15 million in overtime pay, to be exact.

As the number of major construction projects in the city continues to grow, those overtime payments have grown along with it — from $4.4 million in 2014 to $8.1 million in 2015, to $10 million last year.

The head of the Quebec chapter of the Canadian Taxpayers' federation can't understand why.

“It’s a number that could not possibly be defended because that’s work that could be done by somebody else,” Carl Vallee said. “Why would we have men and women in uniform who have had exhaustive training do non-meaningful work like that when it could be done by somebody else at a lower cost?”

Police chief Philippe Pichet and other city officials have suggested hiring civilians to as traffic cops, but the officers' collective agreement forbids that.